My 600D with the big lens I do not get into it, and certainly not with the loop off, no chance. Here a little more space would certainly not hurt.
The 1100 D may appear to fit well because of the quiver, the belt I have to plug something, but then she goes easily. Unfortunately, it is then very taut and except an additional memory card I get hardly anything in the small lockable pocket on the front - is probably also not meant for more.
The bag can be carried with a handle or a shoulder strap, that can be mounted, an additional belt loop is present. I have often cloaks, the belt, the pocket is just too big.
The bag is well padded, so they should catch small falls - I have not intentionally to test before the, to my things were too expensive.
I have to say, take away the camera to shoot a couple of small pictures is the ideal bag, she hardly takes away more space than the camera alone. But if you want to take a few accessories or a second objective, you have to grab unfortunately what larger. Since I usually take with multiple lenses, if I "snap" go, I use the bag rarely.
My Conclusion:
One should consider what type of photographer you here. Who camera only wants plus the attached small lens to take (up to max. 18-55), is well advised, who needs more, should look elsewhere.
From me 4 stars for price / performance ratio.